Suitcase



FIG. 1 is a front perspective view of a suitcase showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a left side view thereof in its open state.

The broken lines in the figures illustrate portions of the suitcase that form no part of the claimed design. 

CLAIM The ornamental design for a suitcase, as shown and described. 